Which is the true statement about Atropine?
Anonymous Quiz
17%
Is derived of plant origin
0%
Is a tertiary amine
0%
Is not absorbed from intact skin
0%
Is a non selective competitive muscarinic antagonist.
83%
All of the above
Pharmacological actions of atropine include the following EXCEPT
Anonymous Quiz
0%
Tachycardia
81%
Active mydriasis
14%
Antispasmodic
5%
Antiemetic
0%
Antiparkinsonian
Which of the following is not a CNS action of atropine?
Anonymous Quiz
42%
Antiemetic in motion sickness
21%
RC stimulation
21%
CIC stimulation
16%
Inhibtion of tremors and rigidity in parkinsonism
Application of atropine as eye drops leads to
Anonymous Quiz
5%
Lacrimation
16%
Reduction of IOP
5%
Eyelid twitches
74%
Cyclopegia
0%
Miosis
Therapeutic use of atropine include the following EXCEPT
Anonymous Quiz
12%
Treatment of vagotonia in vasovagsl attack and carotid sinus syndrome
6%
Treatment of colics snd diarrhea
59%
Treatment of urine retention ( non obstructive)
18%
Fundus examination
6%
Treatment of hyperhydrosis
Which of the following is not a contraindication of atropine
Anonymous Quiz
50%
AV block
40%
Benign (senile ) hyperplasia
0%
Glaucoma
10%
Tachycardia
0%
Angina
Regarding the adverse effects of atropine , choose the wrong one
Anonymous Quiz
10%
Xerostomia
0%
Xerophthalmia
67%
Diarrhea
24%
Urine retention
Scopolamine differs from atropine in that
Anonymous Quiz
13%
a.It does not cause tachycardia
0%
b.Absorbed from the skin
0%
c. Causes sedation , amnesia and hypnosis
0%
d.Ester of tropic acid and scopine base
56%
Only a ,c ,d
31%
All of the choices
Hyoscine is preferred to atropine as pre-anasthetic medication in thyrotoxic patients because:
Anonymous Quiz
0%
Hyoscine does not cause mydriasis
19%
Hyoscine does not decrease bronchial and salivary secretion
6%
Hyoscine does not stimulate RC
75%
Hyoscine does not cause tachycardia
0%
Hyoscine has no antiemetic action
Actions of Beta 1 receptor stimulation include :
Anonymous Quiz
18%
Cardiac stimulation
6%
Increase in FFA in plasma
0%
Increase in sympathetic outflow from CNS
6%
Increase in serum renin
71%
All of the above
Cardiac B1 receptors induce the following actions except:
Anonymous Quiz
0%
Positive inotropic action
5%
Positive chronotropic action
5%
Positive dromotropic action
89%
Reduction of cardiac work
0%
Increase in excitability
Stimulation of B2 receptors can induce which of the following actions?
Anonymous Quiz
11%
Bronchoconstriction
17%
Vc of coronaries and skeletal ms BV
11%
Reduction of aqeuous humor synthesis
11%
Contraction of detrusor ms
50%
Tocolytic action on pregnant uterus
Activation of B2 receptors in skeletal ms leads to the following actions except
Anonymous Quiz
17%
Tremors
6%
Vasodilatation of BV supplying the skeletal ms
6%
Glycogenolysis anc increase in blood lactate
44%
Hyperkalemia
28%
All of the above
Stimulation of B adrenergic receptor can lead to
Anonymous Quiz
5%
Elevation in plasma renin
5%
Elevation of FFA in blood
0%
Elevation of blood glucose
0%
Elevation of blood lactate
90%
All of the above
Alpha 1 adrenergic receptors have the following features except :
Anonymous Quiz
0%
Are Gq coupled
5%
Induce vc of blood vessels especially in skin and mucous membrane
15%
Cause contraction of urinary bladder sphincter
65%
Cause passive mydriasis
15%
Induce ejaculation of semen
Alpha 2 adrenoceptors are characterized by the following EXCEPT
Anonymous Quiz
5%
Having an inhibitory effect on sympathetic outflow
16%
Reduce IOP by decreasing aqueous humor formation
68%
Stimulation of noradreanalin release from adrenergic neurons
11%
Inhibition of renin release from juxtaglomerular cells .
Application of Dipivefrine (lipophilic alpha 1 agonist) to the eye can result in :
Anonymous Quiz
11%
A.Active mydriasis
0%
B.Passive mydriasis
16%
C.Decongistion of conjunctival blood vessels
0%
D.Miosis
74%
E.Both A and C
Application of beta antagonists to the eye can cause:
Anonymous Quiz
20%
Miosis
5%
Cycloplegia
65%
Decrease in IOP
5%
Loss of light reflex
5%
Xerophthalmia
Systemic administration of phentolamine can lead to the following EXCEPT:
Anonymous Quiz
6%
Hypotension
6%
Relaxation of urinary bladder sphincter and trigone
29%
Loss of sweat secretion from palm and sole
41%
Bronchodilatation
18%
Failure of ejaculation in males
Local application of adrenalin to normal eye causes:
Anonymous Quiz
45%
Active mydriasis
14%
Passive mydriasis
7%
Miosis
31%
Decongestion in cases of conjunctival congestion
3%
Xerophthalmia